Grate-journal lock



Aug. 18, 1925.

,W. H. POLLARD GRATE JOURNAL LOCK 3 Sheets-Sheet 1 Filed July 21, 1921 amoewl'oz WHPollard.

Wane

Aug 18, 1925. 1,549,923

w. H. POLLARD GRATE JOURNAL LOCK Filed y- 21, 1921 3 Sheets-Sheet 2 amnmtoz WHPollard :Aug'. 18,1925, 1,549,923

w. H. POLLARD GRATE JOURNAL LOCK Filed July 21, 1.9.21. 5 Sheets-Sheet 5 g V wfli oll a rd a muewtoz Patented Aug. 18, 1 925.

UNITED STATES PATENT OFFICE.

WILLIAM H. POLLARD, or MARION, INDIANA, ASSIGNOR TO AUBURN FOUNDRY con- PORATION, or AUBURN, INDIANA, A ooRronA'rIoN on INDIANA.

GRATE-J'O'URNAL LOCK.

A plication filed July 21, 1921. Serial No. 486,482.

To all whom it may concern:

Be it known that 1, WILLIAM H. PoLLARD, a citizen of the United States, residing at Marion, in the county of Grant and State of Indiana, have invented a new and useful Grate-Journal Look, of which the following is a specification. i

This invention relates to stoves and furnaces, and more particularly to the grate construction thereof, it being an object of the invention to provide novel means to lock the grate bars in predetermined positions.

A further object of the invention is to provide a plurality of rocking grate bars together with means for operating the bars simultaneously to accomplish the shaking and dumping of the material supported by the grate bars.

A still further object of the invention is to provide a novel grate frame, the frame being constructed so that the side members of the frame will not move with relation to each other to insure the efficient operation of the pivoted grate bars.

Vith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit ofthe invention.

Referring to the drawings Figure 1 is a side elevational view of the frame.

Figure 2 is a plan of one of the rocking grate bars.

Figure 3 is a plan View of an end bar end of the grate frame;

Figure 4 is .a detail view of the operating means.

Figure 5 is an end view of one of the grate bars showing the locking means, employed for locking the grate bars in place.

Figureti is a sectional view through the same, taken on line 66 of Figure 7.

Figure 7 is a plan View of the same.

Figure 8 is a vertical sectional view on line 8-8 of Figure 5.

Referring to the drawings in detail, the reference character 5 designates the front wall of a firebox and the reference character 6 designates the rear wall thereof, the walls being provided with suitable bearing supports 7 adapted to accommodate the ends 8 of the side bars 9 of the grate frame which are arranged in parallel relation with each other to support the grate bars indicated at 10. t

The grate frame also includes end bars 11, each of which is apertured as at 12 to permit air to pass upwardly therethrough, the ends of these bars 11 being, however, connected to the side bars 9 as by means of the dove tail connection indicated at 13, thereby providing a connection which will render the frame rigid.

Each of the side bars includes a curved base 14L on which are carried a plurality of supports 15, preferably integral with the base each 'ofwhich supports is provided at its upper end with a recess between upward projections 37; The cut away portion has a bearing 38 on which the journal 17 rests, and a head 39 is provided on the free end of each journal to prevent displacement of the grate bars. The recess may be in the upper end of the support or in a separate part carried thereby as preferred.

Removable bearing blocks 40 and 41, in the recess have arcuate under surfaces engaging the upper part of journal 17 and upwardly extending necks. At their lower ends the blocks 40 and 41 extend down approximately to a horizontal plane passing through the axis of the journal. Grooves 12 are formed in opposite faces of said necks and-the upper surfaces of the bearing blocks are curved in opposite senses, as shown at 18.

Each journal bearing is provided with a key which comprises four spaced leg members 51 provided with ridges 44; on the inner surfaces thereof, the ridges being designed to fit in the grooves 42 of the re movable bearing blocks 40 and 41 to secure the blocks against displacement. The key is somewhat wedge-shaped at 45 on its under side, the wed e-shaped part being designed to rest between the curved surfaces of the blocks to fo-ce the same laterally with respect to each other to secure the blocks within the support.

From the foregoing it is obvious that due to this construction, a grate journal may he s curely locked within its support by means of the key as described, and that the removable bearing blocks may be readily and easily removed to permit the journal to be lifted from its bearing.

Laterally extending fingers 19 with short fingers 19 between them form a part of the respective fixed and movable grate bars, the lingers of one bar being arranged to operate between the fingers of the adjacent bar, to accomplish the dumping and shaking of the grate, and the lon fingers of one grate bar alining with the short fingers of the next grate bar and nearly touching the sa 1e. Forming a part of each of the moval le grate bars, is a depending operating arm indicated at 20 which has its lower extremity pivotally connected to the connecting bar 21, that is of a length slightly less than the length of the grate proper to permit the ends thereof to clear the walls 5 and 6 of the support when the grate is operated.

' Having connection with the forward e1;- tremity of the connecting bar 21, is a depending bracket 22 which is provided with an opening to accommodate one extremity of the controlling rod 23, the threaded portion 2 1 thereof being shown as disposed within the opening of the bracket 22, there being provided the lock nuts 25 and 26 abutting the ends of the bracket, and having cooperation with the threaded portion of thecontrolling rod 23 so that the rod 23 may be adjusted with relation to the bracket to insure the efiicient operation of the grate bars.

Associated with the controlling rod 23 is a fulcrum bracket member 27 which supports the pivoted arm 28 that has one e2;- tremity pivotally conneceted to the rod 23 as at 29, so that movement of the arm 28 results in a relative movement of the rod 23 to effect the operation of the grate bars.

This arm 28 is provided with a curved surface indicated at 30, that has a recess 31 forming a part thereof, there being a similar recess 32 formed in one edge of the arm 28 below the recessed portion 31, the recess being desi ned to accommodate the curved extremity 33 of a detent 34, which issupported by the bracket 27. The upper extremity of the detent 3a is curved and provided with a weight 35 which normally tends to hold the upper extremity toward the grate proper to insure that the extremity 33 of the member 34 will position itself automatically within one of the recesses 31 and 32, upon the operation of the lever 36 which has connection with the arm 28 by means of a slot in the arm 28.

From the foregoing it is obvious that the lever 36 may move forward freely toward the grate, the curved surface 30 of the arm contacting with the locking member but the return movement being limited by engagement of the detent in the recess. Such operation moves the grate bars away from neutral or central position in one direction and back again.

If the grate bars are to be moved in the opposite direction from neutral position, or to and fro in both directions from neutral position, the member 33 is moved out of contact with the recessed portion 31 when the lever 36 may be moved at will, after which the detent may be caused to engage either of the recesses 31 and 32 to limit movement of lever 36 in one direction, movement in the opposite direction being limited by engagement of the lever with the detent or its pivot 53.

It is believed that in view of the foregoing disclosure, a further detail description of the operation of the device is unnecessary for a clear understanding of the invention.

What is claimed as new is:

1.111 a grate, a frame, rocking grate bars carried thereby, journals on said bars, and bearings for said journals in the frame including a lower bearing block, a pair of upper bearing blocks spaced from each other, and a key having a part fitting between the upper blocks to lock them in place, substantially as set forth.

2. In a grate, a frame, rocking grate bars carried thereby, journals on said bars and aearings for said journals in the frame including a lower bearing block, a pair of upper bearing blocks spaced from each other with upwardly extending grooved necks, and a key having a part fitting between the upper locks to lock them in place and legs having ribs fitting in the grooves of said necks, substantially as set forth.

3. In a grate, a frame, rocking grate bars carried thereby, journals on said bars, and bearings for said journals in the frame including a pair of spaced upper bearing blocks, each extending down to a horizontal diameter of the shaft, and a key fitting between adjacent faces of said bearings, substantially as set forth.

4. In a grate, a frame, rocking grate bars carried thereby, journals on said bars, and bearings for said journals in the frame including a pair of spaced upper bearing blocks having arcuate upper faces and up wardly extending necks, and a key embracing said necks said key having a Wedgeshaped part fitting between said arcuate faces, substantially as set forth.

5. In a grate, a frame, rocking grate bars carried thereby, journals on said bars having adjacent each end a reduced portion between opposed shoulders, bearings for said journals including removable bearing blocks for said reduced portions and a key having legs adapted to contact With adja- 10 cent faces of said shoulders at the top and sides of the journal, substantially as set forth.

In testimony that I claim the foregoing as my own, I have hereto affixed my signa- 15 ture.

lVILLIAM H. POLLARD. 

